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fractures     
相关语句
  骨折
     RARE STRESS FRACTURES IN SPORTS
     运动中少见的应力骨折
短句来源
     Treatment of the calcaneus fractures by open reduction with fill of bone cement(report of 21 cases)
     切开复位骨粘合剂充填术治疗跟骨骨折21例疗效显著
短句来源
     ATHLETIC STRESS FRACTURES OF THE MEDIAL MALLEOLUS——A REPORT OF SIX CASES
     运动员内踝应力性骨折(附六例报告)
短句来源
     Analysis of Rehabilitation of 215 Cases of the Femoral Fractures
     215例股骨干骨折康复锻炼疗效分析
短句来源
     Analysis of 135 cases of multiple fractures
     多发性骨折135例分析
短句来源
更多       
  骨折的
     The Applical Anatomy of Zygoma and the Retrospective Study of Zygomatic Complex Fractures
     颧骨的应用解剖和颧骨复合体骨折的临床研究
短句来源
     The Experimental and Clinical Studies on Kyphoplasty for Vertebral Compression Fractures
     后凸成形术治疗骨质疏松性椎体压缩骨折的实验与临床研究
短句来源
     Biomechanical study of the improved Harrington technique in the treatment of thoracic and lumbar spinal fractures
     加套筒改良Harrington技术治疗胸腰椎骨折的生物力学
短句来源
     Clinical and CT Findings of Children's Orbital Fractures
     儿童眼眶骨折的临床与CT分析(附40例报告)
短句来源
     CT Findings of 423 Orbital Fractures
     423例眼眶骨折的CT研究
短句来源
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  裂缝
     Fuzzy Estimate of the Height of Hydraulically Induced Fractures
     水力压裂缝高的Fuzzy估计
短句来源
     ANALYSIS OF GEOMETRIC SIZE CALCULATION OF HORIZONTAL FRACTURES DURING FOAM FRACTURING
     泡沫压裂时水平裂缝几何尺寸的计算分析
短句来源
     Distribution Rules of the Effective Fractures in Yangxin Series of Permian in South-west Sichuan and A Discussion on the Method of Location of Wells
     川西南地区二叠系阳新统有效裂缝分布规律与布井方法探讨
短句来源
     The Wellbore Azimuth of Horizontal Wells and the Determination of Natural Fractures' Azimuth
     水平井井眼方位与测定天然裂缝方位
短句来源
     AN APPLICATION OF AWG METHOD OF NUMERICAL INVERSION OF LAPLACE TRANSFORM FOR FLOW IN A FLUID FINITE-CONDUCTIVL TY VERTICAL FRACTURES
     AWG拉普拉斯数值反演方法在有限导流垂直裂缝流动中的应用
短句来源
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  断裂
     Discussion on Fractures in Steel H08Mn2SiA Drawing
     H08Mn2SiA拉拔断裂问题的探讨
短句来源
     Analysis for fracture photograms of SnAgCu/Cu and SnAgCu/Au/Ni/Cu soldered joints indicates that most of the fractures of SnAgCu/Cu and SnAgCu/Au/Ni/Cu soldered joints occurred in the metallic layer of surface mounted components’ ends and minority fractures occurred in the solder/pad interface or in the solder.
     SnAgCu/Cu及SnAgCu/Au/Ni/Cu焊点的断口形貌分析表明,断裂大多数都发生在贴装元件端头金属化层内,少数发生在钎料与焊盘的界面以及焊点内部。
短句来源
     Fractures appeare on the basic materials. The strength of the welding joints is over (465±10) MPa and the sintering density is (3.11±0.01) g/cm3.
     焊缝最高强度可达(465±10)MPa以上,超过基体强度,断裂发生在基体处,对应焊缝的计算烧结密度为(3.11±0.01)g/cm3。
短句来源
     This paper is aimed at researching on the Tertiary CO 2 gas pool forming conditions in Shangdu basin, by means of analyses for regional structures (fractures, volcanicities, magmatism), stratigraphic characteristic and sedimentary facies as well as results of the sesmic exploration, Carbon isotope of CO 2 and helium isotope;
     本文以商都盆地第三系 CO2 气成藏条件研究为目的 ,通过对区域构造 (断裂、火山活动、岩浆作用 )和地层特征及沉积相研究 ,结合地震勘探成果、CO2 碳同位素、氦同位素分析成果 ,系统探讨了商都盆地 CO2 气源、运移通道、储集条件、圈闭及盖层条件 ,并对 CO2 气成藏模式进行了分析。
短句来源
     It is suggested that trapped fractures ore-beaing formed only when the ratio E1/E2 between the elastic modulus E1 of rocks at upper part and that E2 of rocks at lower part is smaller than compressive strength ratio Rc1/Rc2 between the rocks, i.e., E1/E2
     圈闭断裂形成必要条件是浅部地层岩石与深部地层岩石的弹性模量之比小于其两者岩石抗压强度的比值(即E1:E2< Rc1:Rc2)。
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      fractures
    The tough fractures on the surface of the PU/PVC composite sample following impact are quite obvious.
          
    Stress centralization will, in turn, cause a lot of fractures and faults to develop, and ultimately, result in a gas chimney, which is a seismic smear zone beneath or above the reef flat.
          
    A system of two nonlinear equations in partial derivatives, of the hyperbolic type, is obtained for the concentration of one of the liquids in fractures and blocks.
          
    The latter problem may be formulated, for example, so as not to permit closure of the fractures in the bottom zone.
          
    The equations of horizontal displacement of miscible fluids from thin fractured porous formations are derived with allowance for all three mechanisms of mass transfer between the blocks and the fractures.
          
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    Various kinds of acid igneous rocks are found around the Kushan, to theeast of Foochow, Fukien. One earlier variety of the granites, provisionally termedas Kushan Granite, is coarser-grained, often flesh-colored, and biotite-bearing,similar in character to the most frequently seen and widely distributed graniteof whole Fukien; the other, the Kueichi Granite, often intruding into the firstnamed, is colored by different shades of grey, mostly, fine-grained, and mia-rolitie, containing minor amount of hornblende...

    Various kinds of acid igneous rocks are found around the Kushan, to theeast of Foochow, Fukien. One earlier variety of the granites, provisionally termedas Kushan Granite, is coarser-grained, often flesh-colored, and biotite-bearing,similar in character to the most frequently seen and widely distributed graniteof whole Fukien; the other, the Kueichi Granite, often intruding into the firstnamed, is colored by different shades of grey, mostly, fine-grained, and mia-rolitie, containing minor amount of hornblende instead of biotite, yet sometimesvarying its texture to felsitic, porphyritic, or even to micro-graphic. In thecourse of weathering, the soils thus formed from these two granites, as well astheir corresponding surface vegetations are also evidently dissimilar. That the Kueichi granite was really intruding into the Kushan is evidencedby its ramifying apophyses in the latter, its broad marginal phase, its miaro- litie cavities elongated and lined parallel to the intrusive contact and the"sericitization front", so to show a convex curvature facing the Kushan Graniteside along their mutual contact. The prevalent strike of the contact of the granites conicides with thefracture and joint systems of the Kushan Granite, one set of which is N65°E,being also parallel to one of the major vertical joints of the Kueichi. This isprobably due to the prolonged fracturing during the formation of Pacificfolding zones of the Chekiang and Fukien coast, rendering the KueichiGranite intruding along the said fracture system yet itself subjected to the samemechanical stress. Rocks correlated to these two granites are found elsewhere in Fukien. Theymay also be comparable to the two granites of Sihwashan, S. Kiangsi, foundby C. S. Mo and his colleagues. The repeated intrusions of the Post-Jurassicgranites may allow to consider the possibility of repeated formations of theirgenetically related ores. The lead-zinc deposits of Yuntai and Lungyai areprobably related to the igneous activity of the Kueichi Granite.

    经初步瞭解,福建鼓山分布着两种后侏罗纪花岗岩。这从岩石地面分布上的接触情况与显微镜下观察的岩石中组成成分的接触情况两方面得到证实的。从二者产生状态看来,彼此生成时间甚为接近,而同属於太平洋运动产物,分属早晚期活动。再根据前人各种地质文件,推论出福建各地普遍存在着相当於这两种侵入的花岗岩类岩石。因此,联系到福建后侏罗纪金属矿成矿作用的多次性可能。这在江西西华山已有发现。此后从多次性来研究后侏罗纪的炎成矿床的成矿作用,成为必要了。

    1). Rauwolfia verticillata (Lour.) Baill. (family Apocyanaceae) is an erect evergreen shrub growing wild in Kwangtung, Yunnan, and the islands of Taiwan and Hainan. An alkaloid, named Rauwolfia A (C_(25)H_(28)N_2O_2) was isolated recently from root and stem by Chao (赵承嘏) and proved to possess sedative and hypo- tensive activity. 2). The macroscopical, microscopical and sensory characters of the root and of rhizome were studied. The principal differences in microscopic structure between roots of R. verticillata...

    1). Rauwolfia verticillata (Lour.) Baill. (family Apocyanaceae) is an erect evergreen shrub growing wild in Kwangtung, Yunnan, and the islands of Taiwan and Hainan. An alkaloid, named Rauwolfia A (C_(25)H_(28)N_2O_2) was isolated recently from root and stem by Chao (赵承嘏) and proved to possess sedative and hypo- tensive activity. 2). The macroscopical, microscopical and sensory characters of the root and of rhizome were studied. The principal differences in microscopic structure between roots of R. verticillata and R. serpentina, compared in a table, were also pre- sented. 3). The root is cylindrical, more or less branched, curved or slightly torturous slowly tapering toward the end. Externally, it shows a grayish-brown cork and many irregular longitudinal ridges and furrows. The fracture of thin pieces is short and irregular, that of thick pieces is irregular and splintery; the freshly frac- tured surface exhibits a grayish-brown cork, white to dark brown phelloderm and phloem which are easily peeled off, and a pale yellow central core of hard and com- pact wood, occupies about 3/4 to 4/5 part of the root in diameter, it possesses 1 to 4 growth rings and numerous, almost straight-arranged medullary rays. Odour indistinct, and taste bitter. 4). The important microscopical features of the root: The transverse section shows a stratified cork consisting of 3 to 16 alternating tangential bands of larger and smaller cork cells, both of them possess thin, lignified wall. Phelloderm con- sists up to about 10 layers of tangentially elongated parenchymatous cells, most of which contain starch grains and calcium oxalate crystals. Secondary phloem shows starch- and crystal-bearing phloem parenchyma and sieve tubes traversed by phloem rays, the latter being of mostly from 1 to 2 cells, occasionally up to 4 cells in width containing abundant starch grains and a few calcium oxalate crystals and from 7 to 16 cells high in the tangential-longitudinal sections; selerenchymatous fibres which measure 330-670μlong and 13-30μ wide and stone cells which measure up to 70 μ in diameter are scantily scattered singly or in small groups of 2 in the outer part of the secondary phloem and the inner part of phelloderm of the older thick parts of the root, both possess pitted lignified wall. Wood wedges consist of wood fibres, wood parenchyma cells, vessels, tracheids and shorter rays, the cell walls of all these elements are lignified; vessel elements varied greatly in shape and size, from isodiametric or irregular circular, oval, spindle shape, polygonal to cylindrical, up to 760 μ long and 70 μ wide, some of the vessels exhibit tylosis or gummy lignin in the cavity; tracheids measuring up to shout 290 μ long, and 35μ wide with moderately thick end and pitted walls; wood fibres up to 1520μ long and 30 μ wide possess tapered to abruptly tapered ends, and rarely bifurcate, walls with simple and obligue pits: 5). The chief microscopical characters of the rhizome are as follows: the cork shows a similar stratification to that of the root. Inside is a outer narrow zone of phelloderm followed by an inner broad zone of starch- and crystal-bearing par- enchyma in which numerous isodiametric or irregular, elongated stone cells, scle- renehymatous fibres, and latex cells are scattered; stone cells with lignified wall are arranged singly or in groups of 2 to 3, and measure up to 270 μ long, and 115μ wide; selerenchymatous fibres with tapered ends and lignified wall are more longer than that of the root and measure up to 860 μ long, 60 μ wide; pericycle, usually broad, contains a few thick, non-lignified pericyclic fibres which are scattered singly and measure up to 2850 μ long, 20μ wide; the fibres show taping and often lobed ends, with alternate, constricted and enlarged portions having thin wall and broad lumen which measure up to 30μ wide and concentrically zoned in cross, section. The bundles are of bicollateral type, constituted of external phloem, xylem, and internal phloem; vessels are shorter than that of the root, up to 690 μ long, 50 μ wi- de; wood fibres are longer than that of the root, up to 1610μ long, 30μ wide; in- ternal phloem forms a ring at the margin of the pith containing starch grains, calcium oxalate crystals and a few selerenchymatous fibres which are similar to that of the cortex; numerous irregular amorphous masses of brownish colour also occur in the root and rhizome. 6). The starch grains are mostly simple, with a few 2 to 3-compound grains, the individual grains are spheridal, ovoid, elliptical, and possess a centric point or clift hilium, measuring up to 17μ in diameter; no distinet polarization and strati- fications are visible. 7). The monoclinic prisms, tabular crystals, clusters, and a number of twin crystals of ealeium oxalate were found in the root and the rhizome measuring up to 43μ long; they are often arranged in longitudinal rows.

    本文簡单地介紹了过去数年內国外方面对于几种蘿芙木屬Rauwolfia植物生藥的生藥学研究結果,然后就国产蘿芙木R.verticillata(Lour.)Baill.的植物形态、分布、根和根状茎的形状、組織构造及粉末特征,分別作了較全面而詳細的描述,以备今后鑒定生药原料时的参考,并附有说明插图14幅。根据本研究的结果,发现本种根与印度蛇木根在组织上有种种差异(参照前表1).此外,本文并报告芙木根的水分、灰分、酸不溶性灰分及全植物硷含量的测定结果,萤光试验的结果,以及几种植物硷反应的试验。

    1. Some theoretical considerations about the controversy between Charlesby's and Tang's theories concerning the solubility of crosslinked polymer induced by irradiation are given. Based on Charlesby's definition of the sol fraction, calculations were carried out for the polymer with initial molecular weight distribution (MWD) of the Flory type by method of direct summation; when q→0, Charlesby's formula of solubility was obtained:S=1/(1 + γ - γS)2;and for the polymer with initial MWD of the Schulz type:S= 1/(1+γ/α-γS/α)1+α...

    1. Some theoretical considerations about the controversy between Charlesby's and Tang's theories concerning the solubility of crosslinked polymer induced by irradiation are given. Based on Charlesby's definition of the sol fraction, calculations were carried out for the polymer with initial molecular weight distribution (MWD) of the Flory type by method of direct summation; when q→0, Charlesby's formula of solubility was obtained:S=1/(1 + γ - γS)2;and for the polymer with initial MWD of the Schulz type:S= 1/(1+γ/α-γS/α)1+α γS→1=α/1+α2. We introduced fo,ur parameters concerning the internal structure of crosslinked polymer, namely;q (s) no. of crosslinked units in sol q(s) =no.of crosslinked units in sol/no. of total units,p (s) = no. of molecules in sol/no. or total units,γ(s) = q(s)/p(s), γ(g) = q-q(s)/p-p(s).where q is the crosslinking density, and p, the fracture density.Due to the fact that the statistical theory of random crosslinking induced by radiation is really a continuation of the gelation theory of three dimensional polycondensa-tion, the molecular weight of the gel molecule should approach infinity. It is therefore suggested that the necessary condition for formation of gel molecule must beγ(g)≥2; γs→1(g) = 2.Based on the process of gel formation as well as the distribution of crosslinking units and fracture units in sol, we obtained p(s)>pS, and q(s)=qS2

    (1)本文认为Charlesby与唐敖庆关于辐射交联高聚物溶解度理论的争论,应先从理论本身进行探讨。我们根据Charlesby溶胶量定义S=sum(nP_(nl)S~l)╱N_0,对Flory型分子量分布高聚物改用加和计算法,当q→0时得到Charlesby关系式 S=1╱(1+γ-γS)~2 此外对Schulz型分子量分布高聚物得到: S=1╱(1+γ╱a-γ╱aS)~(1+a),(?)=a╱1+a(q→0) (2)我们引入了描述高聚物交联体系内部结构及其相互关系的四个参量: q(s)=溶胶中交联单体数╱总单体数,p(s)=溶胶中分子数╱总单体数 γ(s)=q(s)/p(s),γ(g)=q-q(s)/p-p(s)。其中q是交联度,p是裂解度。 按辐射交联统计理论实际上是三向缩聚反应凝胶化理论的继续与发展,凝胶分子的分子量必须为无限大,从而我们提出:形成凝胶分子的必要条件是: γ(g)≥2。 根据凝胶形成过程以及交联单体和裂解单体在溶胶内部分布情况,对溶胶必须满足条件: p(s)>p·S,q(s)=qS~2

    (1)本文认为Charlesby与唐敖庆关于辐射交联高聚物溶解度理论的争论,应先从理论本身进行探讨。我们根据Charlesby溶胶量定义S=sum(nP_(nl)S~l)╱N_0,对Flory型分子量分布高聚物改用加和计算法,当q→0时得到Charlesby关系式 S=1╱(1+γ-γS)~2 此外对Schulz型分子量分布高聚物得到: S=1╱(1+γ╱a-γ╱aS)~(1+a),(?)=a╱1+a(q→0) (2)我们引入了描述高聚物交联体系内部结构及其相互关系的四个参量: q(s)=溶胶中交联单体数╱总单体数,p(s)=溶胶中分子数╱总单体数 γ(s)=q(s)/p(s),γ(g)=q-q(s)/p-p(s)。其中q是交联度,p是裂解度。 按辐射交联统计理论实际上是三向缩聚反应凝胶化理论的继续与发展,凝胶分子的分子量必须为无限大,从而我们提出:形成凝胶分子的必要条件是: γ(g)≥2。 根据凝胶形成过程以及交联单体和裂解单体在溶胶内部分布情况,对溶胶必须满足条件: p(s)>p·S,q(s)=qS~2

     
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